Draft-arm.



G. G. FLOYD.

DRAFT ARM.

APPLICATION FILED DEC. 8, 1915.

1,2134, Patented Jan. 2,1917.

2 SHEETS-SHEET I G. G. FLOYD.

DRAFT ARM.

APPLICATION FILED DEC. 8. 1915.

Patented Jan. 2, 1917.

2 $HEETSSHEET 2;

msrrnn snares Parana oration.

GEORGE G. FLOYD, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STEEL FOUNDRIES, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

DRAFT-ABM.

Specification of Letters Patent.

Patented Jan. 2, 191?.

Application filed December 8, 1915. Serial No. 65, 643.

To all whom it may concern:

Be it known that I, GEORGE G. FLOYD, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Draft-Arms, of which the following is a specification.

My invention relates to car underfram'es,

and has particular reference to a novel sill I strengthening device for wooden center sill cars.

It has been found in practice that cars constructed with wooden center sills are likely to become disabled, due to breal age of the center sills at a point contiguous to the body bolster. This breakage has been sought to be overcome in a number of ways, the most efi'ective means, I believe, having been found to be a device such as shown in the patent to Crawford, No. 915,272.

The present invention relates to a modification of the'structure shown in'the Crawford patent and hasfor its object a construction which may be manufactured more cheaply, due to the fact that one or more of the elements composing the built-up structure are formed of rolled metal. A. construction including a rolled metal beam I is, furthermore, better adapted to resist bending strains.

The inventionwill be more readily understood by reference to the accompanying drawings, wherein Figure 1 is a side elevation of a portion of a car under-frame showing my improve ment applied thereto; Fig. 2 is a plan view of the same; Fig. 3 is a section on the line 33 of Fig. 2; Fig. 4 is a section on the line 44 of Fig. 2; Fig. 5 is an end elevation of the casting, and Fig. 6 is a section on the line 6-6 of Fig. 1.

In the drawings, the wooden center sills are indicated at 10, and wooden sub-sills at 11. A wooden end sill isshown at 12'. The reinforcing or strengthening element comprises a rolled steel beam 13,one of which is applied to the side of each center sill, and a combined draft gear supporting device and bufler block, the draft gear supporting device comprising twoparallel members 14, 15, united at their upper edges.

by the web "16, and at their forward ends by extensions 17, which terminate in the buffer block 18. As stated, the parallel members 14, 15, and the bufi'er block are all formed in a single casting.

As best shown in 'Figs. 3 and 4, the rolled metal beam is preferably in the form of a bulb angle, the web of the angle lying vertically alongside one face of the Wooden center sills, while the horizontal legs preferably project inwardly from the inner face of the wooden sill and provide a means of attachment for the cast draft gear supportmg devices. A plate 20 connects the beam 13 at a point forward of the body bolster,

one edge of the plate forming an abutment for the rear ends of the draft gear supporting castings, the opposite edge of the plate forming an abutment for the body bolster. An angle 21 unites the beams at the rear of the body bolster,-the vertical leg of the angle acting as an abutment for the body bolster and also for the wooden sub-sill 11.

The end sill 12, which, in the present instances, is shown as composed of wood, lies between a vertical wall 22 on the buffer block and the ends of the rolled metal beams 13.. It'will be noted that the draft gear supporting members are provided with a horizontal flange 23, which underlies the wooden center sills and provides for fastenlng bolts through the wooden center sills. It will be noted also that the castings and rolled members are securely riveted together through their horizontal flanges, thereby forming a substantially integral structure. The portionwhioh supports the draft gear and acts as a bufier block is of heavy cast form, well adapted to receive the shocks incident to service, while the beam which extends longitudinally of the sills is of rolledimetal and is well adapted to resist the bending strains to which it is subjected.

54 plate uniting and spacing apart said beams at each side of said bolster and acting as an abutment therefor, and a pair of cast metal draft gear supporting plates rigidly secured to the horizontal legs of said beams,

said plates being formed in a single casting, 10 substantially as described.

Signed at Chicago, Illinois, this 2d day of December, 1915.

GEORGE G. FLOYD.

Witnesses:

J. F. LYNN, I

CHAS. GARDNER. 

